Car brake



e m m w e e .n S 04 .0 N A Z L O B A (No Model.)

GAR BRAKE.

* Patented Mar. 4', 1884f OQYwL/u y U i i V: I-

- Mlgqmh FT? i IL Pans. MW. wmnfi v N'ITE-D- STATES PATENT OFFICE.

ANDRE BOLZANO, or MARKT nnnwrrz, BAVARIA, GERMANY.

CAR-BRAKE.

SPECIFICATION formingpart of Letters Patent N 0. 294,570, dated March 4,1884. Application filed November 5, 1883. (No model.) Patented in ItalyDecember 31, 1883, XVII, 15,993, and XXXII, 109.

To all whom it may concern:

Be it known that I, ANDRE: BOLZANO, a citizen of the city of MarktRedwitz, near Wunsiedel, in the Kingdom of Bavaria, German Empire, haveinvented a new and useful Improvement in Automatic Lever-Brakes forRailway-Carriages, of which the following isa specification. f

This invention has for its object an improved construction of automaticlevenbrakes for railway-carriages,

brake levers androds are dispensed with, and

whereby the ordinary the brake apparatus is rendered independent of theoscillating framing of the carriage, the ordinary brake shafts andlevers being replaced by an arrangement of toggle-links and elbowlevers,enabling the brakes to be worked by hand from any desired part of thetrain by means of a cord or rope.

The construction of the said brake apparatus is shown on theaccompanying drawings, in which Figure l shows an inside view of theapparatus as applied to one of the carriagewheels, the brake-leveribeing partly broken away and indicated in dotted lines, for the sake ofclearness. Fig. 2- shows on the lefthand side a plan of Fig. 1 and onthe righthand side a horizontal section. Fig. 3 shows a vertical sectionof Fig. 1. Fig. 4 is a part elevation of the part of the brake-framerunning parallel with the axle, and of the coupling-bar 1", connectingthe brake-blocks on either side of the carriage. Fig. 5 shows a frontView of the strap 1) and tongue 0 shown in Fig. 4:, and Fig. 6 shows ahorizontal sec-,

tion of Fig. 5.

- As shown in the drawings, a suitably-shaped frame, a, is suspendedfrom the carriagesprings by straps b, and is also supported by pins supon the axle-boxes. This frame is either guided directly in thehorn-plates, or it has tongue-pieces 'c, which are guided in sockets d,fixed to the carriage-framing, and which serve to hold the frame steadyagainst the tendency of the brake-blocks to turn round with-the wheels,the brake-blocks being supported in guides e on the frame. The part a.of the frame-carries the pivots g of the elbowlevers 7c and the pivot hof the brake-lever i, which is leaded at its outer end, (not shown,) soas to tend to keep the brakes always applied,

The mechanism for applying the brakes consists of the two elbow-leversk, connected at one end to the brake-blocks, either directly or by meansof adjustable screw-rods m, either in tension or thrust, for theadjustment of the blocks as they wear, the blocks of the opposite wheelsbeing connected by the couplingbar 4. The other ends'of the levers 7care connected to the toggle-links ll, pivoted on the transverse rod q,to the middle of which the brake-lever i is connected, so that by thedownward motion of the latter the brakeblocks are applied, while by theupward motion thereof they are taken off. The lever t can be actuated byhand by means of a cord,

either at the middle or'at the side of the carriage, the supports of thecord being, if necessary, arranged independent of the oscillatingcarriage-frame.

As the tendency of the weighted lever t is always to apply the brakes,the brake-cord has to be kept strained, so as to hold thelever in araised position for keeping the brakes off,

and is slackened when they are to be applied so, as to allow the leverto fall. Thus, on the brake-cords becoming broken, the brakes will beautomatically applied.

I claim- 1. The combination,in railway-brakes,of the toggle links Z,actuating the brake -blocks through elbow-levers K, with a loaded lever,4;, and bar q, so arranged as to cause the toggle-link to apply thebrakes when the lever is released.

2. The combination of car-wheels, springs, and brake-levers with aframe, a, straps b,

tially as described, for preventingthe rotation of the frame. 7

3. The combination of car-wheels, brake-levers, and brake-blocks with aframe, at, having guides 'e for the brakdblocks, substantially as setforth. a

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ANDRE BOLZANO.

axle-boxes having pins 8, and means, substan-

